Can't document `typography.less`

When I try to generate documentation from a file named `typography.less` DocumentJS seems to ignore it. I assume it might be because the theme files also use a `typography.less` file, but not sure.

At the top of `typography.less` I have:

```
/**
* @stylesheet typography.less Typography
* @parent styles-theme 1
*
* @description
* Typography should be used as a baseline to indicate hierarchy on every page of the application.
* Always choose the appropriate text size for the specific part being laid out, to communicate
* importance among headlines, content, microcopy and controls.
*
**/
```

When I generate the docs, Typography is not listed in the menu:

If I change the `@stylesheet` declaration to anything else, like this:

```
/**
* @stylesheet typography Typography
...
```

Then the generated docs add Typography to the nav:

What's strange is that I have another project where `typography.less` is used as the name and, as far as I know, it works. So perhaps this is only isolated to my project, but I'd like to know if it can be reproduced.